130728422 has 32 divisors (see below), whose sum is σ = 219469824. Its totient is φ = 57896800.

The previous prime is 130728421. The next prime is 130728431. The reversal of 130728422 is 224827031.

It is a super-2 number, since 2×130728422² = 34179840637220168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130728421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222413 + ... + 222999.

It is an arithmetic number, because the mean of its divisors is an integer number (6858432).

Almost surely, 2^130728422 is an apocalyptic number.

130728422 is a deficient number, since it is larger than the sum of its proper divisors (88741402).

130728422 is a wasteful number, since it uses less digits than its factorization.

130728422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 130728422 is about 11433.6530470362. The cubic root of 130728422 is about 507.5241037837.

The spelling of 130728422 in words is "one hundred thirty million, seven hundred twenty-eight thousand, four hundred twenty-two".